DYNOJET: Ign timing
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Road Captain
Joined: Mar 2012
Posts: 533
Likes: 43
From: Fresno, TX
Ign timing
I have notice that my 2016 heritage runs better in autotune. I do know that when it is in autotune the timing is retard 4 degrees.I have look thru the data logs and have noticed That the engine is intermently picking up a spark knock under 3k rpm. Then the ECM retards the timing up to 1/4 to 2 degrees. This happens on both cylinders, but not at the same time. Would I be better to global retard the timing 2 degrees and have the ECM advance the timing instead of the engine have spark knock retard.
Cruiser
Joined: Aug 2016
Posts: 232
Likes: 59
From: Round Rock TX
If you are seeing .25-2 degrees of timing being pulled I would remove timing right before you see the ecm pull the timing but only a couple points then check to see if it is good. But before you pull timing make sure your VE's are set correctly then pull the timing and double check both fuel and timing. I would not pull 2 degrees out of the entire map because you are not seeing knock events in the entire map.
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Andrea Capello
Ignition/Tuner/ECM/Fuel Injection
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Sep 24, 2015 03:03 PM
